Speed control



Aug. 1s, 1925. n 1,549,866

. M. D. G OODWIN SPEED CONTROL Filed March 13. 1924 a s a 1 mug d Patented ug. 1.8, 1925.

MALCOLM DILLON GOODTIN, 0F RUANOKE, VIRGINIA.

SPEED CONTROL.

Application filed March 18, 1924.

To @ZZ ifi/wm t may concern.'

Be it known that I, MALCOLM Dumon GOODWIN. a citizen of the United States, residing at Roanoke, in the county ot Roanoke and .State ot Virginia, have invented a new and useful Speed Control, oi which the tollowing is a specification.

This invention relates to a speed control designed primarily tor use upon motor driven vehicles, one of the objects ot the invention being to provide a speed controlled switch connected to and operated by one ot the rotating` parts of a vehicle and so ai ranged that, when the speed of the vehicle passes a predetermined rate, the current through the ignition system will be cut ott automatically.

A further object is to provide mechanism oit this character which is simple and compact in construction and can, it desired, be connected to the hub portion of a wheel so as to be actuated by the rotation ot the wheel.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parte and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment ot the invention herein disclosed may be made within the scope oi what is claimed without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings Figure 1 is a section through the device constituting the present invention, a portion ot the wheel being indicated by broken lines.

Fig. 2 is a section on line 2-2, Fig. 1.

Referring to the figures by characters of reference A designates a steering knuckle having a spindle B on which the hub C of a wheel is mounted to rotate in the usual manner. ln the present instance the spindle B has a bore 1 extending longitudinally therein and provided with a radial outlet 2 at one end. A nut 3 engages the outer end of the spindle and has a threaded extension 4. This nut is provided with separate openings 5 in which are mounted the insulated terminals of wires 6, the said wires being proL vided with contacts 7 at their outer ends exposed beyond the end of the extension 4. The wires 6 are extended through the bore 1 Serial No. 700,089.

and radial opening 2 and torni a part ot the ignition circuit of the vehicle.

The hub C is provided with a cap S the central portion of which has an opening 9 through which projects the extension 4, there beinga nut 1() upon the extension Jfor clamping against the cap 8 as shown.

A housing 11 is adapted to be screwed onto the cap 8, this housing being closed at its outer end. .Extending inwardly lfrom the outer end ot the housing is a guide' sleeve 12 in which is mounted a plunger 13. This plunger is slidable and has a collar 14 at its inner end to which are pivotally connected links 15. These links are also pivotally connected to levers 16 carrying weights 17. Levers 16 are pivotally attached to the housing 11 as shown at 1S. A spring 19 is mounted in the guide sleeve 12 and bears against plunger 13 so as to hold the ends o1c the plunger normally pressed against the ends ci the contacts 7, thereby to maintain an electrical connection between the contacts so that the circuit of the ignition is normally closed. A screw 2O is adjustably mounted in the outer end ot the housnig` 11 and bea-rs at its inner end against spring 19.' Thus by the use of a screw driver or the like the screw can be rotated to vary the compression of spring 19 and increase or reduce the resistance otiered by the spring to the movement of the weight 17 under the action of centrifugal torce.

Under ordinary conditions, where the wheel of the vehicle is rotating at less than a predetermined speed, the spring 19 will support the weight 17 and hold the ends oi' plunger 13 against contact 7. However, should the rotation ot the wheel become ei:- cessive the weight 17 would be thrown outwardly by centrifugal torce, thereby drawing plunger 13 against spring 19 and away from the contact 7. Thus the circuit through the ignition system will be broken and the operation of the engine will be stopped until the speed of the vehicle has been reduced suiiciently to allow the spring 19 to again thrust plunger 13 against the contact 7.

Obviously the housing 7 can be sealed so that access cannot be had to the interior thereof by unauthorized persons.

The speed controlling device can be applied to any of the wheels of a vehicle by making necessary modifications in the arrangement of the parts or, if desired, it can be mounted at any suitable point on the rehiele Where it can be driven by Sonie purtoperated by the forward ni reinent of the vehicle.

Thot is claimed is l. rEhe Comhinntion with zi henriirngV eleinon' ot zi Vehicle, and a wheel mounted for rot-zi* tion thereon7 ot separate insulated contacts carried hy the bearing element, u housing ro-- tzitirhle with the Wheel, a eirenit closing element iotzitahle `with the housing, :rdjnetzihle yieldzible ineens ttor holding Said element normally,Y in engagei'nent with the contacts, und a4 centrilingnl governor Within the lionsin@v and Connected to said element 'or shitting it away troni the emitaots when the rotzi tion ot the wheel housing reaches :i ore leterinine'l Speed.

2. The combination ll1 u hearing` element, a Wheel mounted for rotation thereon7 and spaced contacts e rried oy the hearing element7 ot n houraingl rotatable with the. Wheel, a guide in the housing, o siidahle member carried by the guide and normally 1,54e,eee

engaging the cont-flete to elose the Circuit therehetWeen7 and n centrifugal governor within the lionsinzg` 'tor shifting the Circuiteloser ont of normal position when the rotntion ot the wheel and housing reaches e predetermined speed.

The Combination with zr bearing elenient7 u Wheel inonnted i'or rotation thereon.y nu epoced Contacts carried by the hearing element, of :i housing rotatable with the` wheeL :i guide in the housing', n slidnhle ineinleer carried by the guide end normally engaginn the eontuets to close the eirenit therehei, een, sind ai centi-il' el governor Within the housing for Sl ilftnig the oiienit closer ont otl normal position when the rotwtion ot' the Wheel and housing reiehe..` zx predetermined Speedi and znijnStnhle yieldzihle ineens 'for holding):v the circuit closer nornmlly ngziinst the contacts.

n testimony that l olziini the lfoiegoiiig @is Tiny own, l here hereto altixed my signature.

MALCOLM DLLGN GGODVJN. 

